CVE-2002-2443

NameCVE-2002-2443
Descriptionschpw.c in the kpasswd service in kadmind in MIT Kerberos 5 (aka krb5) before 1.11.3 does not properly validate UDP packets before sending responses, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged packet that triggers a communication loop, as demonstrated by krb_pingpong.nasl, a related issue to CVE-1999-0103.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-2701-1
Debian Bugs708267

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
krb5 (PTS)buster1.17-3+deb10u4fixed
buster (security)1.17-3+deb10u6fixed
bullseye1.18.3-6+deb11u4fixed
bullseye (security)1.18.3-6+deb11u3fixed
bookworm1.20.1-2+deb12u1fixed
trixie1.20.1-5fixed
sid1.20.1-6fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
krb5sourcesqueeze1.8.3+dfsg-4squeeze7DSA-2701-1
krb5sourcewheezy1.10.1+dfsg-5+deb7u1DSA-2701-1
krb5source(unstable)1.10.1+dfsg-6708267

Notes

http://krbdev.mit.edu/rt/Ticket/Display.html?id=7637
https://github.com/krb5/krb5/commit/cf1a0c411b2668c57c41e9c4efd15ba17b6b322c
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